#VU85298 Improper Neutralization of Argument Delimiters in a Command in bundler - CVE-2021-43809
Published: January 11, 2024
Vulnerability identifier: #VU85298
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-43809
CWE-ID: CWE-88
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
bundler
bundler
Software vendor:
Bundler
Bundler
Description
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability occurs when working with untrusted and apparently harmless `Gemfile`'s. A local user can trick the victim into opening a specially crafted directory containing a `Gemfile` file that declares a dependency that is located in a Git repository and execute arbitrary code on the target system.
Remediation
Install updates from vendor's website.
External links
- https://github.com/rubygems/rubygems/commit/a4f2f8ac17e6ce81c689527a8b6f14381060d95f
- https://github.com/rubygems/rubygems/security/advisories/GHSA-fj7f-vq84-fh43
- https://github.com/rubygems/rubygems/pull/5142
- https://github.com/rubygems/rubygems/commit/0fad1ccfe9dd7a3c5b82c1496df3c2b4842870d3
- https://www.sonarsource.com/blog/securing-developer-tools-package-managers/